- Computers

BRIEFCASE

May 29, 1993

PRODIGY AND the Sierra Network announced a linkup Friday aimed at expanding the electronic playground for subscribers to their computer on-line information services. Prodigy said the agreement with Sierra, ''a nationwide, electronic amusement park,'' will allow Prodigy subscribers to play games and talk with Sierra subscribers via their computer modems. The operation should be activated later this year. No financial terms were announced.